added word shuffle functionality

README.md

@@ -137,16 +137,7 @@ $env:TARGET_IP="YOUR_PLAYER1_IP,YOUR_PLAYER2_IP" ; python control.py "MODE:1;0;0
 
 #### 6. Prepare Word List
 
-Shuffle the word list for randomization:
-```bash
-# Windows PowerShell
-cd experiment-scripts
-Get-Content word-list.txt | Sort-Object {Get-Random} | Out-File word-list-shuffled.txt
-
-# Linux/Mac
-cd experiment-scripts
-shuf word-list.txt > word-list-shuffled.txt
-```
+You can shuffle the word list directly in the web interface (see Web Interface Usage section below).
 
 ### Web Interface Usage
 
@@ -159,8 +150,8 @@ Once you have the web interface running at `http://localhost:8000`:
    - These should match the IPs you used in the `control.py` commands
 
 2. **Prepare Word List**
-   - Copy your shuffled word list from `word-list-shuffled.txt`
-   - Paste it into the large text area on the right side
+   - Copy your word list from `word-list.txt` and paste it into the large text area on the right side
+   - Click the **"Shuffle"** button to randomize the word order
    - Click the **"Modify"** button to generate interactive word items
 
 3. **Set Game Parameters**